Every inmate knows the exact date that they will be released. The first person to ask would be them. If you are not able to communicate or doubt their word you can always call the institution and ask to speak with a case manager or unit secretary to see if they will provide you with this information. In some cases this information is available online.
https://www.inmateaid.com/ask-the-inmate/how-will-i-be-able-to-find-out-when-my-boyfriend-is-released-from-prison#answer
Accepted Answer Date Created: February 13,2016